Tancock, E.O. . <br/><br/>
The Elements of Descriptive Astronomy /  Textual Documents 
E.O.Tancock. 
 - 1st ed. / 
 - Oxford :  At the Clarendon Press ,  1942. 
 - 158p. :  ill ;  19cm . 
<br/><br/><label>Subjects--Index Terms: </label>Astronomy G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>523.1  / T 155 El